/**
 * Copyright (c) 2017-2018, zengjintao (1913188966@qq.com).
 * <p>
 * Licensed under the GNU Lesser General Public License (LGPL) ,Version 3.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.gnu.org/licenses/lgpl-3.0.txt
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.jfast.framework.web.core.param;

import javax.servlet.http.HttpServletRequest;

import com.jfast.framework.kit.StrKit;

public class AnnotationPara extends ActionMethodPara{

	private HttpServletRequest request;
	
	private Object value;
	
	public AnnotationPara(Object value, HttpServletRequest request) {
		this.value = value;
		this.request = request;
	}

	@Override
	public Object getPara() {
		if(value instanceof Param){
			Param param = (Param) value;
			String name = param.name();
			String value = request.getParameter(name);
			String defaultValue = param.defaultValue();
			return  StrKit.isEmpoty(value) ? defaultValue : value;
		}
		return null;
	}
}
